<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(runoob.com)</title> 
<style>
.card {
  width: 250px;
  box-shadow: 0 4px 8px  rgba(0, 0, 0, 0.2), 0 6px 20px  rgba(0, 0, 0, 0.19);
  text-align: center;
}

.header {
    background-color: #4CAF50;
    color: white;
    padding: 10px;
    font-size: 40px;
}

.container {
    padding: 10px;
    
}
</style>
</head>
<body>

<div class="card">
  <div class="header">
    <h1>1</h1>
  </div>

  <div class="container">
    <p>January 1, 2016</p>
  </div>
</div>

</body>
</html>